It is hard to guess what a Guianan squirrel monkey weights. But we have the answer:
An adult Guianan squirrel monkey (Saimiri sciureus) on average weights 750 grams (1.65 lbs).
The Guianan squirrel monkey is from the family Cebidae (genus: Saimiri). It is usually born with about 108 grams (0.24 lbs). They can live for up to 27 years. When reaching adult age, they grow up to 32.2 cm (1′ 1″). Usually, Guianan squirrel monkeys have 1 babies per litter.
As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.
The Guianan squirrel monkey (Saimiri sciureus) is a species of squirrel monkey from Guiana, Venezuela and Brazil. S. scuireus formerly applied to Humboldt’s squirrel monkey and Collins’ squirrel monkey, but genetic research in 2009 and 2015 revealed that these are distinct species.
Animals of the same family as a Guianan squirrel monkey
We found other animals of the Cebidae family:
- Peruvian night monkey with a weight of 800 grams
- Humboldt’s white-fronted capuchin bringing 2.52 kilos (5.56 lbs) to the scale
- White-faced saki bringing 1.67 kilos (3.68 lbs) to the scale
- White-bellied spider monkey bringing 6.71 kilos (14.79 lbs) to the scale
- Aotus infulatus with a weight of 800 grams
- Collared titi bringing 1.22 kilos (2.69 lbs) to the scale
- Rio Beni titi with a weight of 992 grams
- Geoffroy’s spider monkey bringing 7.6 kilos (16.76 lbs) to the scale
- Brown woolly monkey bringing 6.27 kilos (13.82 lbs) to the scale
- Red-faced spider monkey bringing 8.7 kilos (19.18 lbs) to the scale
Animals with the same weight as a Guianan squirrel monkey
As a comparison, here are some other animals that weight as much as the Saimiri sciureus:
- Mexican fox squirrel bringing 697 grams to the scale
- Swynnerton’s bush squirrel bringing 675 grams to the scale
- Painted ringtail possum bringing 642 grams to the scale
- Bolivian bamboo rat bringing 729 grams to the scale
- Red-tailed sportive lemur bringing 763 grams to the scale
- Cuban solenodon bringing 806 grams to the scale
- Variable pocket gopher bringing 615 grams to the scale
- Yellow ground squirrel bringing 779 grams to the scale
- Northern greater galago bringing 812 grams to the scale
- Western gray squirrel bringing 704 grams to the scale
Animals with the same size as a Guianan squirrel monkey
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Guianan squirrel monkey:
- Common echymipera with a size of 27 cm (0′ 11″)
- Striped bandicoot with a size of 26.7 cm (0′ 11″)
- Mountain cottontail with a size of 32.4 cm (1′ 1″)
- American marten with a size of 38.2 cm (1′ 4″)
- Red-bellied titi with a size of 35.8 cm (1′ 3″)
- Black-bearded flying fox with a size of 28.5 cm (1′ 0″)
- David’s echymipera with a size of 37.6 cm (1′ 3″)
- Southern giant slender-tailed cloud rat with a size of 38.2 cm (1′ 4″)
- Golden bamboo lemur with a size of 30.5 cm (1′ 1″)
- Northern sportive lemur with a size of 28 cm (1′ 0″)
Animals with the same litter size as a Guianan squirrel monkey
Here is a list of animals that have the same number of babies per litter (1) as a Guianan squirrel monkey:
- Midas free-tailed bat
- Ocelot
- Grey rhebok
- Spectral tarsier
- Pig-tailed langur
- Riverine rabbit
- Raffray’s bandicoot
- Four-horned antelope
- Common duiker
- California leaf-nosed bat
Animals with the same life expectancy as a Guianan squirrel monkey
Completely different animals, but becoming as old as a Guianan squirrel monkey:
- Binturong with an average maximal age of 22.67 years
- Platypus with an average maximal age of 22 years
- Anoa with an average maximal age of 22.5 years
- Ring-tailed lemur with an average maximal age of 30 years
- Mantled howler with an average maximal age of 25 years
- Potto with an average maximal age of 26 years
- Common wallaroo with an average maximal age of 24 years
- Northern plains gray langur with an average maximal age of 25 years
- Muskox with an average maximal age of 24 years
- Egyptian fruit bat with an average maximal age of 22.83 years